4.4.2 Diagnostics ..........................15 4.4.3 Operation ............................. 16 4.4.4 Display Messages ........................16 Reading Data from the MBD-2 ......................17 Maintenance ............................17 O-Ring ............................. 17 6.1.1. Inspection and Replacement....................... 17 Internal Battery (Detector & RTC) Replacement ................18 C-Rings ............................20 Troubleshooting ..........................
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Figure 1: MBD-2 Personal Dosimeter System ....................7 Figure 2: MBD-2 Physical Features ......................7 Figure 3: MBD-2 Board with Detector Placement (relative to case) ............. 7 Figure 4: MBD-2 Wrist Strap ......................... 9 Figure 5: Wrist Strap Orientation & Assembly ....................9 Figure 6: Preparing the Wrist Strap ......................
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2. This device must accept any interference received, including interference that may cause undesired operation. Modifications: Any modifications made to this device that are not approved by Mirion Technologies Oy may void the authority granted to the user by the FCC to operate this equipment.
Preparation for Storage or Shipment The following procedure is to be used if your MBD-2 must be stored or shipped for any reason. First, remove the main battery (Section 3.2.1.1). Pack the complete MBD-2 along with the proper maintenance documentation and turn it in to your Property Book Officer (PBO) for shipment.
The MBD-2 personal dosimeter system is designed to be worn on the wrist with a 15- inch hook and loop wrist strap. The MBD-2 can also be worn on the trunk of body (clipped to lanyard, pocket, etc.). In this use case, the proper MBD-2 orientation is the display facing away from the body.
LCD as shown in Section 4.4.4, Common Display Messages. The MBD-2 will alert the wearer to the status of battery life by display battery icon and message, as shown in Section 4.3.1.3, Battery Display Indication.
Installing the Wrist Strap The Wrist Strap is a simple, durable accessory for affixing the MBD-2 to a wrist. The Wrist Strap uses hook and loop material with a C-shaped ring to facilitate easy donning and securing to an outer garment sleeve.
Figure 6: Preparing the Wrist Strap Insert hand through the loop, pull the strap around itself and securely fasten as shown below in Figure 7, Donning the MBD-2 and Securing the Wrist Strap Figure 7: Donning the MBD-2 and Securing the Wrist Strap...
Turn the battery cover counter-clockwise to remove. Figure 8: MBD-2 Battery Cover Removed c. Verify the presence of the O-Ring. Inspect for integrity. See Section 6, Maintenance, for additional O-Ring information.
Section 6.1, O-Ring for guidance. Install the battery cover by turning clockwise. The MBD-2 case and battery cover are designed with thread stops, as shown below in Figure 12, MBD-2 and Main Battery Cover Thread Stop, to prevent wear and stripping of the threads and also ensure a secure fit.
The MBD-2 reports Main Battery power status with a standard battery icon: Figure 13: Battery Power Icon The icon segments, as shown below in Table 2, MBD-2 Battery Icon Segments, represent the following power status: Table 2: MBD-2 Battery Icon Segments...
When the battery voltage is below 25% (approximately < 2400 mV), the MBD-2 will report battery low power status on the display in the following conventions as shown below in Table 3: MBD-2 Battery Display Messages: Table 3: MBD-2 Battery Display Messages...
Start-up and Diagnostics 4.4.1 Start-up When the battery is installed, the MBD-2 powers on. There are no switches to power on or off the MBD-2. 4.4.2 Diagnostics During start-up, the MBD-2 performs diagnostics and then becomes active with a live display.
The default LCD configuration displays Total Deep Dose (sum of Gamma and Neutron) and cGy measurement units. Figure 14: MBD-2 with Active Display 4.4.4 Display Messages The MBD-2 may display messages or characters on the LCD under certain conditions of operation: Table 5: MBD-2 Display Messages Message Condition Lo.t...
Measurement data is saved in MBD-2 resident memory and the newest values over period of 15 days is maintained in the NFC chip memory. The MBD-2 is configured to perform two daily “reads”, where a dose or measurement record is saved to memory including a date and time stamp.
Figure 16: MBD-2 without O-Ring and Inspection c. Install the O-Ring on the flange. Run a fingertip around the top of the O-Ring to ensure it is seated properly as shown in Figure 17, MBD-2 with Installed O-Ring below. Figure 17: MBD-2 with Installed O-Ring Internal Battery (Detector &...
(i.e.; gloves, safety glasses, etc.) as applicable. e. Dispose the used batteries in accordance with site requirements. Note: the detector and real-time clock batteries shall be replaced together during scheduled maintenance. MBD-2 Operating Manual 15-00167, Rev 1...
Install the main battery in accordance with 3.2.1.1, steps f-h. C-Rings The C-Ring is 1.9mm thick stainless steel ‘C” shaped loop which is affixed to the MBD-2 by two insertion holes on opposite ends of the device case. The C-Rings are used for attaching a wrist strap or other accessory.
Position one side of the C-Ring into the insertion hole, then the other side. e. Release the Plier tool so that the C-Ring is now secure. Swivel the C-Ring to ensure fit. Figure 21: C-Ring Replacement MBD-2 Operating Manual 15-00167, Rev 1...
Troubleshooting Display Messages The MBD-2 will display messages or characters on the LCD display during certain conditions. This section describes the displayed messages, their meaning and how to correct: 7.1.1 Display Messages: Problems and Resolutions Table 6: Display Message Table...
Message: If following Error #6, indication of an intentional hard reset due to corruption of: parameter, data structure, calibration, DAC, element, BLE reset, watchdog, RTC, NFC and others, Device is resetting itself Resolution: Informational message, no action. MBD-2 Operating Manual 15-00167, Rev 1...
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Resolution: Move the device to a cooler environment and stabilize. The Hi-T message disappears. Problem: The NFC chip is not responding due to an electronics failure. NFC chip is not responding Resolution: Read-out is not possible. Remove device from service. MBD-2 Operating Manual 15-00167, Rev 1...
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Problem: The I2C address of the NFC chip has been invalid at device start-up. The chip has not been properly initialized by the manufactured. NFC device address has been invalid Resolution: The problem is resolved by the NFC device firmware. (RESERVED) MBD-2 Operating Manual 15-00167, Rev 1...
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Problem: The measurement result memory does not contain a valid measurement result record due to empty or corrupt flash memory Factory parameters applied Resolution: Restart device by removing and re-inserting battery. If error message repeats, remove device from service. MBD-2 Operating Manual 15-00167, Rev 1...
Parts Replacement parts for the MBD-2 can be identified in Figure 22, MBD-2 Replacement Parts below Figure 22: MBD-2 Replacement Parts Item Description Part Number MBD-2 Personal Dosimeter MBD-2, complete unit only RAF 1237 058 C-Ring (2) C-Ring retainer for wrist band (each)
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